JP2586558B2 - Method and apparatus for stopping constant winding length of roving yarn of roving machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method and an apparatus for stopping a roving take-up length of a roving machine.

(Prior art) In recent years, in spinning factories, labor saving has progressed, and one step has been advanced from automation in each process, and connection between each process and automation of conveyance have been implemented. Automation of a roving bobbin has also been proposed. The roving yarn transport during the roving / spinning process is generally performed in a state where the roving bobbin is suspended on a transporting body that moves along a transporting path provided on the ceiling (for example, Japanese Patent Application Laid-Open No. 50-76340, See JP-A-61-194228). In order to prevent the hanging of the roving yarn due to the vibration during the roving conveyance, it is preferable to stop the winding while the bobbin rail is being lowered. On the other hand, in order to ensure the automatic cutting of the roving yarn connected to the roving bobbin from the presser paddle of the flyer by lowering the bobbin rail after stopping the winding, it is necessary to stop the winding of the roving machine in the middle of the ascent of the bobbin rail. There is.
Further, at the time of the roving splicing operation after the roving yarn changing operation in the spinning process, it is desirable that the position of the roving end be at a predetermined position in order to smoothly perform the roving yarn joining operation. Furthermore, in recent years, it has been widely adopted that the roving change operation of the spinning machine is performed at the same time for all spindles for automation and labor saving in the spinning process.
It is necessary to set the amount of roving wound on one roving bobbin so as to be a predetermined number of tubing yarns in the spinning process.

For this reason, as shown in FIG. 8, a dog 52 is provided at one end of a bobbin rail 51, and a limit switch 53 is provided substantially at the center of the ascending / descending range of the bobbin rail 51 during a winding operation. After the full counter signal is output from the auto counter 55 for counting, when the limit switch 53 is turned on, the machine is stopped.

(Problems to be Solved by the Invention) In the above-described conventional method of stopping the full filling, the stop position of the bobbin rail 51, that is, the position of the roving end is fixed by the action of the limit switch 53, Of the auto counter 55
Bobbin rail 51 when the full signal is output from
Is not constant. In addition, in the device that automatically cuts the roving after the full tube is stopped, the limit switch 53 is turned on when the dog 52 engages the limit switch 53 during the ascent of the bobbin rail, and the cutting of the roving is performed manually. When the dog 52 engages with the limit switch 53 during the lowering of the bobbin rail 51, the limit switch 53 is turned on. Therefore, while the dog 52 is moving in the direction in which the limit switch 53 is turned on,
When the full signal is output from the auto-counter 55 in a state close to the limit switch 53, the limit switch 53 is immediately turned on and the time until the machine stops after outputting the full signal is short, but the limit switch 53 is moving in the same direction. If a full signal is output immediately after the engagement of the bobbin rail 51 with the dog 52 is released, the bobbin rail 51 moves an extra round trip before the limit switch 53 is turned on and the machine stand is stopped. Therefore, the length of the roving wound on the bobbin is extra by a maximum of two layers. Since the roving bobbin has a diameter of about 15 cm and the number of turns per inch of the bobbin is 9 to 10 when the tube is full, the roving length is about 90 m for two layers.

An object of the present invention is to stop the roving end so that the position of the roving end is at a predetermined position during the movement of the bobbin rail in a predetermined direction when the winding stops due to a full tube, and the roving winding length becomes a predetermined length. It is an object of the present invention to provide a method and apparatus for stopping a roving take-up length of a roving machine.

(Means for Solving the Problems) In order to achieve the above object, in the present invention, a control means capable of controlling the lifting and lowering movement of the bobbin rail independently of the roving winding is provided. The spinning length is calculated, and when the spinning length of the roving reaches a predetermined value, the position of the bobbin rail is detected. On the basis of the remaining winding time up to the pipe, the bobbin rail is moved up and down until the full load is changed from the normal operation, and the bobbin rail is stopped at the predetermined stop position when the full load is reached.

Further, as an apparatus for performing the above method, a control means capable of controlling the lifting speed of the bobbin rail independently of the roving winding speed, a roving feed amount calculating means for calculating a roving feeding amount from the front roller, Position detecting means for detecting the position of the bobbin rail in the vertical direction, and calculating the position of the bobbin rail based on an output signal from the position detecting means when the remaining spinning length reaches a predetermined value in the vicinity of the full tube. A bobbin rail in which the position of the bobbin rail when the tube is full is the predetermined stop position based on the required movement amount of the bobbin rail from the position to a predetermined stop position when the tube is full and the remaining winding time until the tube is full. Calculating means for calculating the moving speed of the vehicle.

(Operation) In the present invention, the vertical movement of the bobbin rail is controlled by the control means independently of the roving winding. The spinning length from the start of winding the roving is calculated, and when the spinning length of the roving reaches a predetermined value, the position of the bobbin rail is detected by the position detecting means. Then, based on the required movement amount of the bobbin rail from the position to the predetermined stop position when the tube is full and the remaining winding time until the tube is full, the control means causes the bobbin rail to move up and down until the tube is full. The operation is changed from the normal operation and the bobbin rail is stopped at the predetermined stop position when the tube is full, and the roving winding length becomes the predetermined length.

Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. The front roller 1 has a gear train 4 disposed between one end of a rotating shaft 1a and a driving shaft 3 that rotates integrally with a driving pulley 2 that is driven to rotate by a main motor M (shown in FIG. 2). And is driven to rotate. A driven gear 6 is fitted and fixed to an upper portion of the flyer 5 so as to be integrally rotatable, and a driving gear 9 fitted to a rotating shaft 8 to which rotation of the driving shaft 3 is transmitted via a belt transmission mechanism 7. It is designed to be rotated.

On the other hand, the rotating shaft 13 to which the driving gear 12 meshing with the driven gear 11a of the spindle 11 mounted on the bobbin rail 10 is fitted and fixed uses the rotating force of the driving shaft 3 and the cone drums 14a and 14b. The rotational force from the rotating shaft 15 driven by the speed change mechanism is combined and transmitted by the differential gear mechanism 16. That is, the rotation of the rotating shaft 15 driven via the cone drums 14a and 14b is transmitted to the differential gear mechanism 16 via the gear train 17 and the belt transmission mechanism 18.
The rotary shaft 13 is connected to a belt transmission mechanism 19 disposed on the output side of the differential gear mechanism 16 via a universal joint 20 and a connection shaft 21.

The rotation of the rotating shaft 15 is transmitted to a rotating shaft 24 on which a gear 23 meshing with a lifter rack 22 fixed to the bobbin rail 10 is fitted via a switching mechanism 25, a gear train 26 and a differential gear mechanism 27. Is done. The switching mechanism 25 is connected to a molding device (not shown) and is operated in conjunction with the movement of the molding device.By switching the engagement between the bevel gears 25a and 25b and the bevel gear 25c, the lifter rack 22, that is, the bobbin rail 10 The direction of the lifting movement is changed. The differential gear mechanism 27 combines the rotational force from the rotary shaft 15 and the rotational force from a control motor 29 that is driven to change speed via an inverter 28 as a variable frequency power supply.
The rotation speed of the output portion of the differential gear mechanism 27 is increased when the rotation direction of the control motor 29 is the same as the rotation direction input from the cone drum 14b, and is reduced when the rotation direction is the opposite direction. ing. The differential gear mechanism 27, the inverter 28, and the control motor 29 constitute control means capable of controlling the speed of the lifting and lowering movement of the bobbin rail 10 independently of the roving winding speed.

Rotation speed detectors 31 and 33 are disposed near the gear 30 that rotates integrally with the front roller 1 and near the gear 32 that rotates integrally with the rotation shaft 24, respectively. At a predetermined position above the bobbin rail 10, an ultrasonic distance sensor 34 as a position detecting means for detecting the position of the bobbin rail 10 in the vertical direction is provided. The distance sensor 34 analog-outputs a voltage proportional to the distance to the detection body 35 attached to the bobbin rail 10. In addition, when the bobbin rail 10 is disposed substantially at the center of the range of the vertical movement of the bobbin rail 10 during the winding operation, the bobbin rail 10
A limit switch 37 is provided at a position where the limit switch 37 can be engaged with the dog 36 to which is attached. The limit switch 37 is provided so as to be turned on when the dog 36 is engaged with the limit switch 37 when the bobbin rail 10 is raised.

A control device 38 that drives and controls the control motor 29 via the inverter 28 includes a roving yarn delivery amount calculating unit, a central processing unit (hereinafter referred to as a CPU) 39 as a moving speed calculating unit in the vertical movement of the bobbin rail, and a control program. Program memory 40 consisting of a read-only memory (ROM) that stores
And a working memory 41, which is a readable and rewritable memory (RAM) for temporarily storing input data input by an input device (not shown) and the result of arithmetic processing in the CPU 39, etc. Operates based on the program data stored in the. Output signals of the rotation speed detectors 31 and 33 are directly input to the CPU 39, and output signals from the distance sensor 34 are input to the CPU 39 via the A / D converter 42. The output of CPU 39 is output interface 43
Is input to the inverter 28 via the.

Next, the operation of the device configured as described above will be described.
In the apparatus of this embodiment, the bobbin rail 10 is further lowered from the winding operation position after the winding stop due to the full tube is stopped, thereby automatically cutting the roving from the presser 5a of the flyer 5 to the roving bobbin B. Due to this configuration, the winding of the roving yarn is stopped while the bobbin rail 10 is being lifted. Prior to the operation of the machine stand, the control motor must first respond to the spinning conditions.
After setting the remaining spinning length at the start of the control by 29, that is, the count-up value corresponding to roving feeding from the start of winding, and the value of the predetermined position by the input device, the operation of the machine base is started. .

During the spinning operation, the bobbin rail 10 moves up and down around the limit switch 37. The CPU 39 inputs and counts the output signal from the rotation speed detector 31 from the start of winding, and calculates the amount of roving sent from the front roller.
It counts up when the remaining spinning length reaches a predetermined value near the full tube. When the count-up signal is output, the CPU 39 calculates the position of the bobbin rail 10 based on the output signal from the distance sensor 34, and
It is determined whether the vehicle is rising or descending. If the vehicle is rising, it is determined whether the vehicle has passed a predetermined position. If it does not pass through the predetermined position, the distance to the predetermined stop position when the vessel is full, that is, the appropriate position, is calculated, and the lifting speed of the bobbin rail is calculated. In order to operate the control motor 29 for controlling the rotation input to the dynamic gear mechanism 27, a drive signal is output to the inverter 28 via the output interface 43. As a result, the rising speed of the bobbin rail 10 increases, and the winding width of the roving becomes coarse. Shortly before the bobbin rail 10 reaches an appropriate position, the drive of the control motor 29 is stopped and the bobbin rail 10
Is returned to the normal ascending speed, and the rovings are wound in a normal state in which the rovings are in close contact with each other, and the state shown in FIG. 5 is obtained. This is to prevent the trailing end of the wound roving from sagging during the transport of the roving to the spinning process. Next, when the dog 36 is engaged with the limit switch 37, and the limit switch 37 is turned on, the main motor is stopped, the machine is stopped, and the full lamp (not shown) is turned on. Whether or not the bobbin rail 10 is moving at a predetermined speed by driving the control motor 29 is confirmed by the speed calculated based on the output signal from the rotation speed detector 33.

On the other hand, if the bobbin rail 10 is rising and passing a predetermined position at the time of counting up, the bobbin rail 10 needs to perform an ascending and descending motion operation of ascending, descending, and ascending by a stop,
The CPU 39 calculates the required travel distance of the bobbin rail 10 during this time, that is, the distance to an appropriate position, and based on the required travel distance and the remaining winding time to full load, the bobbin rail 10
The moving speed of 10 is calculated, and a drive control signal of the control motor 29 is output to the inverter 28 via the output interface 43 so as to move at the moving speed. This allows the control motor
29 is driven to rotate forward at a predetermined rotation speed, and the bobbin rail 10 moves at a speed higher than a normal ascending speed. Bobbin rail 10
When the vehicle reaches the rising end, the switching of the building motion is performed, and the CPU 39 drives the control motor 29 to rotate in the reverse direction at the same speed as the aforementioned speed. As a result, the rotating shaft 24 is rotated in the opposite direction (reverse rotation direction) at substantially the same speed via the differential gear mechanism 27, and the bobbin rail 10 moves down at substantially the same speed as described above. When the falling end is reached, the building motion is switched again, and the CPU 39 outputs a signal for driving the control motor 29 to rotate forward at the same speed again. Then, the bobbin rail 10 is moved up again at substantially the same speed as described above. Shortly before reaching the appropriate position, the drive of the control motor 29 is stopped in the same manner as described above, and the operation shifts to a normal winding operation. The tube lamp is turned on. If the bobbin rail 10 is at a predetermined position at the time of counting up, the control motor 29 is not driven, and the bobbin rail 10 is moved at a normal ascending speed until the machine stops.

On the other hand, if the bobbin rail 10 is descending at the time of counting up, it is necessary to move the bobbin rail 10 once to the lower end before stopping the machine and then move upward, and the CPU 39 moves the bobbin rail 10 necessary before stopping. The distance is calculated, and an appropriate lifting / lowering speed of the bobbin rail 10 is calculated. And
A control signal for driving the control motor 29 at a speed necessary to move the bobbin rail 10 at the speed is output to the inverter 28 via the output interface 43. As a result, the control motor 29 is driven in the reverse direction to increase the rotation speed of the output portion of the differential gear mechanism 27, and the bobbin rail 10 is moved down at a speed higher than the normal movement speed. When the bobbin rail 10 reaches the lower end, the building motion is switched, and the CPU 39 outputs a signal for driving the control motor 29 to rotate forward at the same speed as described above. The bobbin rail 10 moves upward at substantially the same speed by the forward rotation of the control motor. Then, shortly before the bobbin rail 10 reaches an appropriate position, the drive of the control motor 29 is stopped to shift to a normal winding operation, and then, when the dog 36 is engaged with the limit switch 37, the machine base is stopped. And the full lamp is turned on.

After confirming the position of the bobbin rail 10 at a point close to the full tube where a constant winding length has been left as described above, by changing the lifting / lowering speed of the bobbin rail 10 according to the position, a predetermined amount of coarseness is obtained. The bobbin rail 10 always stops at a predetermined position when the yarn is wound up and the full tube stops.

Second Embodiment Next, a second embodiment will be described with reference to FIGS. In this embodiment, instead of providing a speed change mechanism using a cone drum in order to gradually decrease the rotation speed of the spindle 11 and the elevating speed of the bobbin rail 10 with an increase in the roving amount of the roving yarn, a rotating shaft for driving the spindle 11 is used. 13 is an inverter
A rotary shaft 24 that is connected via a universal joint 20 and a connecting shaft 21 to a drive shaft 46 that is driven by a variable speed motor 45 that is speed-changed via 44 and drives the lifter rack 22 is connected via an inverter 44. The point that the output shaft of the control motor 47 that can be driven forward and reverse and that is driven by a variable speed is connected via gears 48 and 49 is greatly different from the apparatus of the above-described embodiment.
The control of the variable speed motor 45 and the control motor 47 is performed via an inverter 44 that is differentiated based on an output signal from the control device 38. That is, in the apparatus of this embodiment, the spindle 11 and the bobbin rail 10 are driven completely independently of the drive system of the draft part without providing the differential gear mechanisms 16 and 27. When the apparatus of this embodiment is used, the winding of the roving is stopped in accordance with the flowchart of FIG. The difference from the above embodiment is that the control motor 47 is constantly driven from the start of the machine operation to the stop of the machine frame, and the rotation speed of the control motor 47 that directly corresponds to the moving speed of the bobbin rail 10 in the vertical movement. Is calculated.

In the case of the apparatus of the above embodiment, when the control motor 29 is driven, it is impossible to change the rotation speed of the spindle 11 to correct the roving winding tension. It is not preferable to wind the yarn more densely than in a normal winding state because roving breakage is likely to occur.
However, in the apparatus of this embodiment, the rotation speed of the spindle 11 can be freely changed by controlling the variable speed motor 45 based on the tension measurement value of the roving tension measuring device 56 provided between the front roller 1 and the flyer 5. Therefore, even after the bobbin rail 10 has passed through the predetermined position at the time of counting up, if there is a certain distance to the appropriate position, the control motor 47 is driven at a speed lower than the driving speed in the normal winding operation state to drive the bobbin rail 10. It is also possible to reduce the rising speed of the rail 10 and increase the roving take-up density from a normal density so as to wind up the remaining roving when it reaches a suitable position.

It should be noted that the present invention is not limited to the above-mentioned two embodiments, and various embodiments can be adopted for the vertical movement of the bobbin rail within the scope of the technical idea of the invention described in the claims. Also, for example, a moving member that moves as the bobbin rail 10 moves up and down, such as a device disclosed in Japanese Patent Application Laid-Open No. 60-21928, instead of the distance sensor 34 as the position detecting means of the bobbin rail 10, A detector that continuously detects the movement of the member and outputs a signal may be provided, and the output signal may be input to the CPU 39. When the bobbin rail 10 does not automatically cut the roving yarn by the downward movement of the bobbin rail 10 after the winding stop due to the full tube, the winding of the roving yarn may be stopped when the bobbin rail 10 descends. .

(Effects of the Invention) As described above in detail, according to the present invention, when the bobbin rail stops at a predetermined stop position in the middle of moving in a predetermined specific direction at the time of its ascent or descent, the roving yarn is Since the roving bobbin is wound so as to have a predetermined length, when the bobbin of the roving is simultaneously changed in the spinning process, the amount of the remaining roving can be minimized, and Since the position of the end is within a predetermined range, the roving splicing operation after the roving change (particularly, the roving splicing operation by an automatic machine) can be performed smoothly.

In addition, if the roving machine is provided with a differential gear mechanism for moving the bobbin rail to the over-down position after winding is completed, some devices such as position detecting means are added without changing the conventional mechanism. It can be easily implemented only by this.

[Brief description of the drawings]

1 to 5 show a first embodiment of the present invention. FIG. 1 is a flowchart, FIG. 2 is a schematic diagram of an apparatus, FIG. 3 is a schematic perspective view of a driving mechanism, FIG. 4 is a diagram showing the time change of the lifting speed of the bobbin rail, FIG. 5 is a diagram showing the roving state of the full bobbin, and FIGS. 6 and 7 show the second embodiment. FIG. 6 is a schematic perspective view of a drive mechanism, FIG. 7 is a flowchart, and FIG. 8 is a schematic view of a conventional device. Front roller 1, bobbin rail 10, differential gear mechanism constituting control means 27, inverter 28, control motor 29, control motor 47, rotation speed detector 31 , 33, distance sensor as position detection means ... 3
4. Dog… 36, Limit switch… 37, Control device… 38.

Claims (3)

(57) [Claims] The present invention further comprises control means for controlling the lifting and lowering movement of the bobbin rail independently of the roving winding, calculating the spinning length from the start of the roving winding, and setting the roving length to a predetermined value. At the time when the bobbin rail is reached, and based on the remaining winding time until the full travel of the required movement amount of the bobbin rail from the position to the predetermined stop position at the time of full filling, A method for stopping the bobbin rail at the predetermined stop position when the bobbin rail is operated while changing the bobbin rail from the vertical movement and the normal operation, and stopping the bobbin rail at the predetermined stop position. And a control means for controlling the lifting and lowering movement of the bobbin rail independently of the winding of the roving yarn, calculating a feeding amount of the roving from the front roller, and setting the feeding amount of the roving from the start of winding to a predetermined value. At the time when the bobbin rail is reached, the bobbin rail at the time of full load is determined based on the required movement amount of the bobbin rail from the position to a predetermined stop position at the time of full load and the remaining winding time until the full load. 2. The method according to claim 1, wherein the moving speed of the bobbin rail is changed so that the position of the rail is at the predetermined stop position. 3. A roving yarn feeding amount calculating means for calculating a roving yarn feeding amount from a front roller, a control means capable of controlling a lifting speed of the bobbin rail independently of a roving yarn winding speed, and a vertical direction of the bobbin rail. And a position detection means for detecting the position of the bobbin rail at the time when the remaining spinning length reaches a predetermined value in the vicinity of the full tube, and calculates the position of the bobbin rail based on the output signal from the position detection means. The moving speed of the bobbin rail at which the position of the bobbin rail at full filling is the predetermined stopping position is calculated based on the required movement amount of the bobbin rail to a predetermined stop position at the time of filling and the remaining winding time until full filling. A roving take-up length constant length stop device for a roving machine, comprising: